Window Cleaning in Sterling, VA

Window cleaning from our Sterling office reaches homes and businesses across Northern Virginia and Washington DC. Window washing near Sterling means both sides of the glass, plus skylights, garage windows and windows of unusual shape, and the estimate is free and happens on site.

Call (703) 723-7770 to book your free on-site estimate.

What the water suppliers report about hardness

Hard water is what leaves white spots on glass when a rinse dries, so it helps to know what comes out of the tap here. Fairfax Water describes its water as typically “moderately hard” to “hard,” at 5 to 10 grains per gallon, or 84 to 170 mg/l, depending on the Potomac River and the Occoquan Reservoir and varying by location and rainfall. Its 2025 laboratory report for the Corbalis Treatment Plant lists monthly total hardness readings running from 70 to 185 mg/L, with February and December not reported. Loudoun Water buys Potomac water from Fairfax Water, and its 2025 Central System report gives no hardness figure. Your own supplier can tell you which figures apply to your address.

What the job involves

Storefront and office windows

Recurring cleaning of storefront and office windows is part of our work here, next to the home windows.

Where the Sterling office works

From Sterling we reach Washington DC and Northern Virginia, including Arcola, Stone Ridge and Dulles South; Brambleton, Broadlands, One Loudoun and Loudoun Valley Estates near Ashburn; McNair Farms and Fox Mill Estates; Centreville and Chantilly; Fairfax, McLean, Vienna, Falls Church, Arlington and Alexandria; and Manassas Park, plus the wider Prince William County area.

Northern Virginia window cleaning questions